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  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Vacuum Process Based Dry Transfer of Active Layer for PTB7:PC71BM Organic Photovoltaic Devices

2016년 9월 1일 11시 15분 30초
ENVR.P-635 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 13일 (목요일) 11:00~12:30
저자 및
이종화, 김강민, 장웅식1, 안선용1, 김영윤, 박오옥*, 왕동환1,*
KAIST 생명화학공학과, Korea
1중앙대학교 창의ICT공과대학 융합공학부, Korea
Recently, stamping transfer technique, which is considered as an alternative to spin coating process, have been actively researched to be used in organic solar cell due to intermixing problem of spin coating. Furthermore, many advantages of stamping transfer technique were reported in many recent studies such as simple and repeatable process suitable to large area fabrication, low-cost and flexibility. Nonetheless, the power conversion efficiency (PCE) of those devices in previous researches remained low performance around 4% of PCE not enough to commercialization. In this work, to overcome efficiency limit in previous reported organic solar cell fabricated by stamping transfer, we fabricated poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl}) : [6,6]-phenyl-C71-butyric acid methyl ester (PTB7:PC71BM) based solar cells via stamping transfer with polyurethane acrylate (PUA) stamp. With optimized surface energy of the PUA stamp, the bulk hetero junction (BHJ) layer was completely transferred onto poly-(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) layer. An additional vacuum treatment was needed to transfer BHJ layer successfully due to 1,8-diiodooctane (DIO) co-solvent. As a result, stamping transferred BHJ devices have shown comparable PCE (7.11%) with those made by spin coating process (7.29%). Specially, we discovered significantly improved long-term stability of device performance in the PTB7:PC71BM based solar cells fabricated by stamping transfer